Injector oil-burner



( NoModel.)

J. GIRARD.

INJECTOR OIL BURNER.

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N. PETERS Filciblifllcgnphcn wnshin um D. Cv

UNITED STATES PATENT OFFICE. I

JOSEPH GIRARD, OF \VOROESTER, MASSACHUSETTS.

INJECTOR OIL-BURNER.

SPECIFICATION forming part of Letters Patent No. 418,121, dated December 24, 1889.

Application filed April 14, 1888- Sen'al No. 270,629- (No model.)

To all whom it may concern.-

Be it known that I, JOSEPH GIRARD, a citizen of the United States, residing at WVorcester, in the county of WVorcester and State of Massachusetts, have invented certain new and useful Improvements in Injector Oil-Burners, of which the following, together with the accompanying drawings, is a specification sufficiently full, clear, and exact to enable persons skilled in the art to which this in vention appertains to make and use the same.

The object of my preseni invention is to provide an eificient, convenient, and economical apparatus for the combustion of liquid hydrocarbon in furnaces for heating steamboilers and for other analogous purposes, the particular features of improvement and subj eat-matter claimed being hereinafter definitely specified.

In the drawings, Figure 1 is a longitudinal vertical section of a steam-boiler furnace illustrating the nature of my invention. Fig. 2 is a vertical transverse section at line w m, Fig. 3. Fig. 3 is a horizontal section at line y y, Fig. 1. Fig. l is a longitudinal section showing details of the atomizing and injecting devices drawn to somewhat larger scale; and Fig. 5 is an inner end view of the injecting-tube.

Referring to parts, A denotes the main walls of the furnace, and B the boiler, which parts may be constructed and arranged in well-known manner, with the furnace-chamber O, pit to, bridge-wall A, and grate or supporting bars g,'j'disposed substantially as shown.

D indicates the tube or funnel through which the liquid hydrocarbon is injected or thrown into the furnace-chamber O. Said funnel is some two and one-half inches (more or less) in diameter, open at both ends, and of a length that will extend through the wall of the furnace and project within and without to the required distance, or as convenient for attachment of pipes and facility of working. This funnel D is arranged in the end of the furnace, substantially as indicated. The outer end of the funnel-tube is preferably curved out of line with its axis, but may be made straight, if in any instance desired.

E indicates the pipe through which the liquid hydrocarbon is conducted from the tank E or other source of supply and delivered to the interior of the funnel D. Said pipe E extends into the funnel D, as indicated, and has its delivery-orifice near the central axis thereof, as at e.

E indicates the cock or valve for regulating the quantity of hydrocarbon delivered in a given time, and 6 indicates a screw-nut for adjusting the position of the delivery end of said pipe.

F indicates the atomizer-nozzle or blastpipe entering the funnel D parallel with its axis and at right angles to the pipe E, with its exit-orifice f disposed in relation to the orifice e in such a manner that the blast through the orifice f will atomize or spray the liquid as it enters at c and project the spray forward through the funnel D into the furnace; A suitable cock or valve F is provided for regulating and stopping off the flow or blast through'the nozzle F.

H indicates a secondary blast-nozzle arranged below or near the nozzle F, preferably with its exit-orifice h slightlyback from the orifice f, although this is not absolutely essential. The nozzle projects its blastin the same direction as the nozzle F, and its purpose is for augmenting the pressure or re-enforcing the action for driving forward the spray when a large quantity of hydrocarbon is being introduced from the pipe Eas, for instance, when it is desired to temporarily force the furnace beyond the normal working condition, to quickly recover loss of steampressure, or to meet any unusual exigencies of service that may occur in practice. This nozzle is provided with a suitable cook or valve for stopping and regulating the blast therethrough. The apparatus may be used either with or without the nozzle H.

Around the front or inner end of the injector-tube or funnel D, I provide an auxiliary annular blast-nozzle I or drip-preventer. Said nozzle consists of a chamber or passage 2', having a narrow annular opening I, that surrounds the extremity of the funnel D in the manner shown, said opening being directed in substantially the same direction as the exit-orifice of the funnel. (See Fig. 4:.) A passage or pipe I connects the annular 11ozzle I with the main blast-pipe J, and a suitable valve or cock I is provided for stopping and regulating the passage. The purpose of the nozzle I is to throw forward the flame and regulate its force; also to take care of any drops of liquid hydrocarbon that may collect on the interior of the funnel, and to project the same forward as spray into the furnace, and thus prevent liquid dripping from the end of the funnel. The pipe J connects with the steam-boiler B and serves for supplying steam to the several blast-nozzles F, H, and I. Said pipe is provided with a couplinghead J for the attachment of a blower or air-pipe to facilitate the employment of air for the blast instead of steam when desired. 7

J ''a,11d J indicate valves for opening or closing the pipe J for the steam or air, as required. V

Bymeans of the valves H and I the relative force of the blast at the nozzles H and I can be controlled and varied for regulating the action to give a flame of greater or less intensity and force, as desired, while the quantity of hydrocarbon liquid supplied in a given time can be regulated by the cock E in the delivery-pipe-E.

The pipe J can, if desired, be 7 carried through the furnace-chamber O, as indicated by dotted lines in Fig. 1, for superheating the steam for the blast. This, however, is a well-known practice in apparatus of this class, and I do not consider it an essential feature. V

G indicates the fire-brick bed of the furnace; g, the supports therefor; K, the auxiliary lining-Wall; m m, a flame-barrier, and K K K air-passages leading from the pit a for delivering air into the combustion-diam ber.

In the operation the liquid hydrocarbon, as it is delivered at the orifice e, is atomized by the strong blast of steam from the nozzle F, and is blown forward through the funnel, D in the form of spray, together with a quantity of air which enters the open end of said funnel at d, and the projecting force is .further augmented by the blast issuing from the annular nozzle 1, thereby injecting the vaporized hydrocarbon into the furnacechamber, where it is ignited and consumed as it mingles with the air entering through the passages K, the flame being broken up and distributed by the barrier, complete combustion being effected as the gases pass along the under side of the boiler in an economical and eflicient manner. When it is desired to inject a large proportion of hydrocarbon, the auxiliary blast from the nozzle H is turned on more or less in addition to the nozzle F and the cock E opened to deliver the quantity desired.

ciency in the combustion of hydrocarbon liquid, complete atomization and the prevention of drip from the injector-funnel, complete and prolonged combustion throughout the length of the fire-chambers, convenience and facility in the perfect control and regulation of the quantity and intensity of the fire as desired, and the practical adaptation of the apparatus for inexpensive application to boiler-furnaces which are now in use.

I am aware that in apparatus for burning *liquid hydrocarbon it is a well-known pracburne'r, but of different construction from.

my improved barrier hereinbefore described. What I claim as of my invention,an'd desire to secure by Letters Patent, is

1. In an injector oil-burner, the combination, with the injector-funnel having means, substantially as described, for producing from liquid hydrocarbon an atomized vapor within the tube of said funnel, of anannular auxiliary blast-nozzle mounted upon and surrounding the exit extremity of said injectorfunnel, substantially even therewith, and provided with an exit-opening that delivers a blast in the same direction, or substantially so, as the exit of said funnel, and a pipe ex ternally of said funnel for supplying steamblast pressure to said auxiliary nozzle, as and for the purpose set forth.

2. The combination of the injector-funnel,

.the oil delivery and atomizing nozzles arranged therein near its outer end, relatively as shown, the annular chamber 1', surrounding the inner end of said funnel and having the blast-opening I even with its inner eX- tremity, the pipes J F to the atomizing-nozzle, and pipe I, leading to said annular chamber for supplying steam thereto, and the cocks F and I in the respective pipes for independently regulating the same, all arranged and operating substantially as shown and described.

3. The combination of the injector-funnel having the open ends, the hydrocarbon-liquiddelivery pipe, the atomizing blast-pipe and the secondary blast-pipe, with their exit-openings within said funnel, and regulating-valves in each of said pipes for controlling the delivery of hydrocarbon, the atomizing-blast and secondary blast, respectively, all arranged substantially as and for the purpose set forth.

4:. The combination, substantially as described, of the injector-funnel having the open ends, the hydrocarbon-delivery pipe,

the atomizing blast-pipe, the secondaryblast- Witness my hand this 31st day of March, 10 pipe, the annular blast-nozzle surrounding A D. 1888.

the inner extremity of said injector-funnel, h

the steam-supply pipes, and the stop-cocks is or Valves, respectively, disposed in said de Z i livery-pipe, steam-supply and blast pipes, for

controlling the passages through the respect- Witnesses:

ive pipes, all arranged and organized for op- CHAS. H. BURLEIGH,

eration as and for the purpose set forth. ELLA P. BLENUs. 

